Power transmission



Jan. 30, 1923.

H. L. HAMILTON.

POWER TRANSMISSION.

Z SHEET SHEET I.

FILED MAR. 7. I922.

INVE/VTUR WI T IVESSE 5 54% A TTORNEYS Jan. 30, 1923. 1,443,472. H. L. HAMILTON.

POWER TRANSMISSION.

FILED MAR- 7. I922- SHEETS-SHEET .Z-

WIT NESSES By @Wwg A TTURNEYS INVENTOR Patented Jan. 30, 1923.

HAROLD LOUIS HAMILTON, OF CLEVELAN ENGINEERING COMPANY, OF CLEVEL D, OHIO, ASSIGNOR TO THE ELECTROMO'I'IVE AND, OHIO, A CORPORATION OF OHIO.

POWER TRANSMISSION.

Application filed March 7, 1922. Serial No. 541,746.

T 0 all whom it may concern:

Be it known that I, HAnoLn L. HAM wrong a citizen of the United Statvs.

and a rosident of Cleveland, in the countv of (uya hog-a and State of Ohio. i new and Improved which the following act description.

This invention relates to improvements in HLVQ invented a Power Transmission, of is a full, clear, and expower transmissions, an object of the i11 to provide ich a (lIlVlIlQ;

vention hein mlssion, in w a power trans element 1;; inter posed between axles having drivers at the respective ends thereof drivers, the connecting driving element and the nected to pins on the i the four quarters of the rim lrivers, so

and connect the ends hoth pairs of as to utilize ale. two quarters being utilized at one side oi the transmis siOn and the diametrically o )ositc nsrlrrs utilized at the other side oi the trnusini sion.

The invention relates more particular-l to power transmission for electrically dri ven trucks or other motors. and resides in the provision of a drive shaft truck or frame independent of between pair ably located midway upported on the and preferaxles, each axle having drive wheels at its respective ends, and pins on the drive wheels arranged at different quarters with coir necting rods connecting crank disks at the ends of the drive shaft with at the sides of the truck,

the drive Wheels the crank pins of the drivers at one side of the truck arranged ninety degrees. one

in advance of the other. and the arrangement of crank pins and connecting means sides of the truck being positely arranged. whereby continuously applied power dead renters entirely overcome.

on the opposite diamctricall; op-

maximum of utilized and With I a construction oi". power transmission such as I employ,

the arrangement of parts will in sure a constant and even torque and a posh live and full leverage plete circle as the method ployed consists in utilizing ters of the circle. and proved power transmission support the weight of truck or f ame and not u throughout the como'l' timing emthe tour quarloy reason of this im- 1 am enabled to the motor upon the pen any single axle. so that the result accomplished is a uniform traction of all oi the drivers.

ll'ith these and other objects in view the invention consists in certain novel features of construction. and comhinations and arrangements of parts, as will he more fully hereinafter described and pointed out in the claims.

In the accompanying drawing Figure 1 is a view in side elevation illustrating my improved power transmission applied to :1 truck of the electrically driven type.

Figure 2 is a top plan view of the truck partly in section.

1 and 2 represent axles supporting the frame 3 of the truck. Each oi these axles is prm'idcd at its ends with rigid] scoured or fixed drivlwheels. and for rlearnes of description. l have given these drive wheels diii'erent reference characters.

The driving Wheels on axle 1 are indicated h v the reference numerals 4 and 5 respectively and the driving wheels on the axle 2 are indicated by reference numerals 6 and 7 respectively, the driving Wheels 4 and 6 being on one side of the truck and the driving wheels 5 and T on the opposite sides thereof.

On the frame It at the center cl 1' he truck I mount a jackshaft 8, which constitutes a drive shaft for the truck and transmit power to this drive shaft through the medium of a motor 9, motor shaft 10 and gearing 11. This motor 9 may constitute an electric motor. or it may he any other form of drive. although my invention is partirularly adapted for motors such as are commonly employed on electric cars.

(hank disks l2 and 1.3 are rigidly secured to the respective ends of drive shaft 8. The crank wheel or disk 13 is provided with a crank pin 14;, to which an arm [5 is rigidly secured or otherwise ailixed. and carries a crank pin 1.6 which is located at an angle of ninety degrees or one-quarter of the circle of the disk 13.

It is to he understood that the disk 1.3. crank pin L4. arm 15 and crank pin 16 have rigid relationship and that the arm 15 does not function as a crank arm. hut merely operates to maintain the crank pin 16 in proper position with. relation to the crank pin H and the ther ports oi' the llltl'lliinisln. and is necessarily ofi sel from the outer face of the disk 13 to permit the operation of the transmission, as will mori tnllv hero inat'ler appear.

A connecting rod 17 connects the crank pin H, with a crank pin 8 on the forward drive wheel 7. while the crank pin 16 is connected hv it connecting rod 19 with a: crank pin 2 on the rear drive wheel 5. It will be noted that the crank pin 38 located at a position one-quarter or nin ty degrees in advance or the location of crawl pin 20.

lo the opposite side of the tru k I proviilr an exact dupliintion of parts connecting tlndrive disk 12 with the drive wheel 'j hot 111 ranged in a. diametrically opposite position to the connecting mechanism above do scribed: and to clarify the tlescriniion l shall give these parts on the opposite eide ol (l truck different reference numerals.

lhe disk 12 has a crank pin 21 iiiwl there to with a fixed arm 22 on the crank pi r and said arm 22 has a crank pin 23. connecting rod 24 connects the pin 23 with a (rank pin 25 on the rear d V'iw wheel l and :i run-- netting I'Ull 26 connects the crnnlr pin ll with :1 crank pin ET on the IX-Jronrd !l 'l\'4 wheel 6.

By reference to Figure 1, it ill he iioiwl that the crank pins halving fixed relation lo the disks 12 are arranged on the Four qonr ters of the circle. {no of sold II'E'illi pins lirin on one disk and the other two on the otlier disk, S0 that the power of llnronzrrl ing rods is oppositely applied at the resort tive sides of the truck.

It will also be noted by reference to l*i ore i that when the connecting rod l? is at a dead center position. the connecting; rod 24 on the other side of the truck \r ill also he sit a dead center position. but the coimcttinprods 2G and 19 are in full power position either in thrust or in draft. Hence it will he noted that with a structure or mechanism as above described a complete dead center of power transmission is never had, r. in ther Words in every position of the se eral c n necting rods at least two are ali e; 7. in full power position and at other time; ill. {ou of the connecting rods are in power positi n It is onlv at the instant i dicated in F1 1 that tvvo of connecting rods are over d l center position, hot the other pair of con necting rods being in ful power position overcomes any tendency to dead centrr.

By reason of this construction a complete continuous transmission of power is hard at all times, overcoming sudden jerks and thrusts past central. position which might tend to injure the crank pin, and :1 continuous power is had which resists vibration and jolts to a minimum.

Furthermore, I would call attention to the tool that the driving elemrol consisting: ol the r-iha'l't 8 and disks 12 together nith the motor for driving the same, is located or sop ported by the truck at an intermediate position with ile Weight thereof evenly dis trilniteil upon the tour drive wheels, so that the traction o1 all the drive wheels are alike.

In ordinary electrically driven motor ronstrnctions in common use the weight ol' the motor upon one mile. so that the tra tion of the drive wheels of this axle is very inu la grrr ter than [the oihci' \rheolr ol the truck, mol l. thorrl'orc. not only provide a superior power transmitting meansw lIIil I also. h reason oi" sniil transmitting: means provide improved traction with Hirrosponrlingly improved results.

llr ith this tvpe ol' drive ihe misprung weight hos heen rcducrd to a miniinnon no the motor, transmission jack-shaft trnnlcv and entire power assembly is carried in the frame and shove the springs, whereas in the common accepted prr tire the final drive with motors and gem-inn" are all attached direct to the (hir ng ox A shaft, thus living it dead Weight on the I'Ztlifi. and the results oi this trrzomnlous nnspriang weigh in that type of lilml drive is nowrious and it was to get :m'zrv rom this lilltl l'critnrm :nnong other things. that my lieml ili'lvll was dc- Hignell.

Yorioos sl ght rhoM Jc-l might he nnnlc lo the general form nnd :zrrza: count 0! the ports lcrwriheil mtllonl :lcimriino' from tho inwntion, and hence l'o'o not limit nrvseli to the pre ise details se-i forth hut consider myself at lihertv to nnih'c sorh changes and alterations as l nirly toll within the spirit :Hill scope i-l' the :lf'ipoiolc l claims.

I claim:

I. A power trm'lsniission me hanism, com-- prising a rotary driving element two pairs of driven elements, and connecting rods connecting the driving element with the respective driven elements said connecting rods having connection with the driving element and the driven elements at the four quarters of the resp ctim elemontr:

L A, power trans" i tive d1: 11 h iving connection with the driving element and the driven elements :it the four quarers ot' the respective elemimts the connecting rods of one pair of driven elements an ranged diametrically opposite to the positio-n oi the connecting rods of the other poi r of elements.

3. A power transmission mechanism, conr prising a pair of axles, frame supported. on the axles, driving; Wheels secured to the axles, a driving element located intermediate of the axles and supporting crank pins in pairs. one pair located at one end of the driving element and the other pair at the other end of the driving element. said pairs of crank pins disposed diametrically opposite to each other and the respective pins located at the tour (p arters of the driving element, crank pins on the wheels. and connectine rods connectinp the crank pins of the driving element with the crank pins of the wheels. said crank pins of the wheels being; disposed col-rest)ondingly with the crank pins of the driving element. whereby the crank pins of the driving wheels are located respectively at the four quarters of the circle.

4. The combination with a truck. a pair ol axles supporting the truck. drive wheels sccnred to the axles at opposite sides of the truck. of a drive shaft supported on the truck between the axles. disks on the ends of the drive shaft. a pair of crank pins having: fixed relation to each disk and spaced apart a distance of ninety degrees. the pins on one disk being located diametrically opposite to the pins on the other disk. whereby the tour pins on the disks are spaced Gttllttlly on the quarters of a circle. crank pins on the drive Wheels. and connecting rods connecting the respective crank pins of the disk with said crank pins of the drive wheel.

5. The combination with a truck. a pair ol' axles supporting the truck. drive wheels secured to the axles at opposite sides of the truck. of a drive shaft supported on the truck between the axles. disks on the ends of the drive shaft. a pair of crank pins having fixed relation to each disk and spaced apart a distance of ninety degrees. the pins on one dist: being: located diametrically opposite to the pins on the other disk. whereby the tour pins on the disks are spaced equally on the quarters of a circle. crank pins on the drive wheels. and connecting rods connecting; the respective crank pins ot the disk with said crank pins of the drive Wheel. all of said connecting rods being; of the same length. whereby the crank pins of the set of drive wheels are arranged at the four corners of the circle.

6. The combination with a truck. a pair of axles snporting the truck. and drive wheels at the ends of both axles. of a motor driven drive shaft; supported on the truck between the axles. disks on the ends of the drive shaft. crank pins on the disks. arms fixedly connected to the crank pins. crank pins on the arms. each of said disks having" one pair of crank pins. and the tour crank pins of the two disks arranged at the four quarters of a circle. crank pins on the drive wheels. and connecting: rods of equal length connecting the crank pins of the disks and arms with the crank pins of the drive wheels.

7. lhe combination with a truck. a pair of axles snporting the truck. and drive wheels on the axles. of power transmission means on the truck between the axles. and connecting rods connecting the transmission means with the drive Wheels. whereby the connecting rod connections both with the transmission means and the drive wheels comprise a circular series at the tour quarters of a circle.

HAROLD LOUIS HAMILTON. 

